Can I deduct the BACKFORCE chair from my tax bill? What is the description on the invoice?

Don't worry, the chairs are listed neutrally as swivel chairs in the invoice :) After all, our BACKFORCE chairs are first and foremost ergonomic office chairs.

For Germany, you can read some helpful tips if you want to deduct the chair from your taxes, e.g. for the home office, in this blog post (in german, sorry) from Interstuhl.